Cables: Data transfer cables (USB), image cables (HDMI), or audio connection cables, specifically for photographic equipment.
Screen Protector: Protective films or glass to prevent the rear LCD screen of the camera from getting scratched.
Viewfinder: External viewfinders (optical or electronic) that help with accurate framing, especially under strong sunlight where the screen is hard to see.
Camera Remote Control: Wired or wireless controllers for taking photos from a distance, avoiding camera shake.
Battery Grip: Accessory that attaches to the bottom of the camera, providing space for additional batteries (double the battery life) and improved grip for vertical shooting.